(REOPENS DEL9)

Congress President Sonia Gandhi expressed grief over the demise of Dutta.

Extending her condolences to his wife and daughters, Gandhi said in "the passing away of its President, not only Assam PCC, but the entire Congress as indeed the State of Assam had lost a leader committed to the people".

Congress Vice President Rahul Gandhi also expressed grief over the death of Dutta.

"Extremely saddened by the untimely demise of Shri Anjan Duttaji, Assam PCC President. His passing away is a big loss to @INCIndia & to Assam.My deepest condolences to his family", he tweeted.

Party General Secretary C P Joshi, who is in charge of party affairs in Assam, condoled the death.